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x86: Load structure return address into eax

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Richard Henderson
2015-01-05 12:24:51 -08:00
parent b7f6d7aa9b
commit a03d2310ed
3 changed files with 56 additions and 48 deletions
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src/x86/ffi64.c
+8 -1
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@@ -729,7 +729,14 @@ ffi_closure_unix64_inner(ffi_cif *cif,
gprcount = ssecount = 0;
if (flags & UNIX64_FLAG_RET_IN_MEM)
rvalue = (void *)(uintptr_t)reg_args->gpr[gprcount++];
{
/* On return, %rax will contain the address that was passed
by the caller in %rdi. */
void *r = (void *)(uintptr_t)reg_args->gpr[gprcount++];
*(void **)rvalue = r;
rvalue = r;
flags = (sizeof(void *) == 4 ? UNIX64_RET_UINT32 : UNIX64_RET_INT64);
}
arg_types = cif->arg_types;
for (i = 0; i < avn; ++i)